National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Madison, Dane County Regional-Truax Field (KMSN)

Lat: 43.14°NLon: 89.35°WElev: 860ft.

Fair

64°F

18°C

Humidity 90%
Wind Speed Calm
Barometer 29.98 in (1014.9 mb)
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Last update 17 Aug 10:53 pm CDT
Extended Forecast for

3 Miles SW Sun Prairie WI

  • Tonight

    Tonight: Partly cloudy, with a low around 62. Southwest wind around 5 mph.

    Low: 62 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 79. West wind 5 to 10 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 79 °F

    Slight Chance
    T-storms then
    Showers
    Likely

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 59. West wind around 5 mph becoming calm in the evening.

    Low: 59 °F

    Chance
    T-storms then
    Chance
    Showers

  • Wednesday

    Wednesday: Mostly sunny, with a high near 78. Calm wind becoming north around 5 mph.

    High: 78 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 56. Calm wind.

    Low: 56 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 79. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 79 °F

    Sunny

  • Thursday Night

    Thursday Night: A 30 percent chance of showers and thunderstorms after 1am. Mostly clear, with a low around 60. South wind around 5 mph.

    Low: 60 °F

    Mostly Clear
    then Chance
    Showers

  • Friday

    Friday: A chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 79. West wind 5 to 10 mph. Chance of precipitation is 40%.

    High: 79 °F

    Chance
    Showers then
    Chance
    T-storms

  • Friday Night

    Friday Night: A chance of showers and thunderstorms before 1am, then a slight chance of showers. Partly cloudy, with a low around 60. Chance of precipitation is 50%.

    Low: 60 °F

    Chance
    Showers

Detailed Forecast

Tonight
Partly cloudy, with a low around 62. Southwest wind around 5 mph.
Tuesday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 79. West wind 5 to 10 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tuesday Night
A 30 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 59. West wind around 5 mph becoming calm in the evening.
Wednesday
Mostly sunny, with a high near 78. Calm wind becoming north around 5 mph.
Wednesday Night
Mostly clear, with a low around 56. Calm wind.
Thursday
Sunny, with a high near 79. Calm wind becoming southwest around 5 mph in the afternoon.
Thursday Night
A 30 percent chance of showers and thunderstorms after 1am. Mostly clear, with a low around 60. South wind around 5 mph.
Friday
A chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 79. West wind 5 to 10 mph. Chance of precipitation is 40%.
Friday Night
A chance of showers and thunderstorms before 1am, then a slight chance of showers. Partly cloudy, with a low around 60. Chance of precipitation is 50%.
Saturday
A 20 percent chance of showers after 1pm. Mostly sunny, with a high near 77.
Saturday Night
Mostly clear, with a low around 56.
Sunday
Mostly sunny, with a high near 75.
Sunday Night
Partly cloudy, with a low around 56.
Monday
Mostly sunny, with a high near 76.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SW Sun Prairie WI
 43.15°N 89.27°W (Elev. 984 ft)
Last Update:
9:33 pm CDT Aug 17, 2026
Forecast Valid:
11pm CDT Aug 17, 2026-6pm CDT Aug 24, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation